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Finding the Fourth Proportional to 136,576.16, 188,476.76 and 79,228.76

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Solution

The fourth proportional to 136,576.16, 188,476.76 and 79,228.76 is: 109,336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,576.16 : 188,476.76 = 79,228.76 : x
  2. Step 2: Convert to fraction form
    136,576.16/188,476.76 = 79,228.76/x
  3. Step 3: Cross multiply
    136,576.16x = 188,476.76 × 79,228.76
  4. Step 4: Simplify right side
    136,576.16x = 14,932,779,983.62
  5. Step 5: Solve for x
    x = 14,932,779,983.62/136,576.16
  6. Step 6: Final answer
    x = 109,336.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.